One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(6,11)(8,12)(13,14,17,16)(15,18,20,19)(21,22)(23,29)(24,26)(25,32)(27,30)(28,33)(31,34)(35,36)(5,6,10,11)(7,12,9,8)(13,15,17,20)(14,18,16,19)(22,24)(23,30)(25,33)(34,35)(5,7,10,9)(6,12,11,8)(13,15)(14,18)(16,19)(17,20)(21,23)(22,27)(24,29)(25,31)(26,30)(28,34)(32,35)(33,36)(1,2,3,4)(5,8)(6,7)(9,11)(10,12)(21,24,26,22)(23,29,30,27)(25,28,33,32)(31,34,36,35)(5,9,10,7)(6,12,11,8)(13,16,17,14)(15,19,20,18)(21,25)(22,28)(23,31)(24,32)(26,33)(27,34)(29,35)(30,36)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.